Quarterly report pursuant to Section 13 or 15(d)

Net Assets - Summary of Transactions in Common Shares of Beneficial Interest (Details)

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Net Assets - Summary of Transactions in Common Shares of Beneficial Interest (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Investment Company, Changes in Net Assets [Line Items]              
Share repurchases (in shares) (1,387,108) (3,992,380) (1,058,869) (38,736) (41,118)    
Share repurchases $ (34,830) $ (98,692) $ (25,836) $ (938) $ (1,000)    
Net increase (decrease) (in shares) 23,317,704     42,320,327   37,712,227 130,608,665
Net increase (decrease) $ 578,698     $ 1,035,136   $ 928,315 $ 3,239,105
Common Class I              
Investment Company, Changes in Net Assets [Line Items]              
Subscriptions (in shares) 5,702,297     9,330,513   8,191,706 31,651,791
Proceeds from shares sold $ 141,658     $ 228,310   $ 202,300 $ 786,207
Share transfers between classes (in shares) 0     0   675,921 0
Share transfers between classes $ 0     $ 0   $ 16,465 $ 0
Distributions reinvested (in shares) 439,090     178,923   1,121,427 339,589
Distributions reinvested $ 10,905     $ 4,374   $ 27,495 $ 8,375
Share repurchases (in shares) (269,421)     0   (815,323) 0
Share repurchases $ (6,765)     $ 0   $ (20,139) $ 0
Early repurchase deduction (in shares) 0     0   0 0
Early repurchase deduction $ 0     $ 5   $ 38 $ 10
Net increase (decrease) (in shares) 5,871,966     9,509,436   9,173,731 31,991,380
Net increase (decrease) $ 145,798     $ 232,689   $ 226,159 $ 794,592
Common Class D              
Investment Company, Changes in Net Assets [Line Items]              
Subscriptions (in shares) 5,195,643     5,753,381   8,471,648 15,913,478
Proceeds from shares sold $ 128,993     $ 140,800   $ 208,888 $ 394,775
Share transfers between classes (in shares) 0     0   223,376 0
Share transfers between classes $ 0     $ 0   $ 5,462 $ 0
Distributions reinvested (in shares) 317,143     74,382   704,852 113,781
Distributions reinvested $ 7,878     $ 1,818   $ 17,308 $ 2,797
Share repurchases (in shares) 0     0   (1,015,260) 0
Share repurchases $ 0     $ 0   $ (25,097) $ 0
Early repurchase deduction (in shares) 0     0   0 0
Early repurchase deduction $ 0     $ 3   $ 20 $ 5
Net increase (decrease) (in shares) 5,512,786     5,827,763   8,384,616 16,027,259
Net increase (decrease) $ 136,871     $ 142,621   $ 206,581 $ 397,577
Common Class F              
Investment Company, Changes in Net Assets [Line Items]              
Subscriptions (in shares) 11,715,030     26,543,445   22,327,469 81,923,845
Proceeds from shares sold $ 290,922     $ 649,059   $ 549,772 $ 2,030,490
Share transfers between classes (in shares) 0     0   (899,297) 0
Share transfers between classes $ 0     $ 0   $ (21,927) $ 0
Distributions reinvested (in shares) 1,335,609     478,419   3,333,482 746,035
Distributions reinvested $ 33,172     $ 11,694   $ 81,751 $ 18,360
Share repurchases (in shares) (1,117,687)     (38,736)   (4,607,774) (79,854)
Share repurchases $ (28,065)     $ (938)   $ (114,122) $ (1,938)
Early repurchase deduction (in shares) 0     0   0 0
Early repurchase deduction $ 0     $ 11   $ 101 $ 24
Net increase (decrease) (in shares) 11,932,952     26,983,128   20,153,880 82,590,026
Net increase (decrease) $ 296,029     $ 659,826   $ 495,575 $ 2,046,936